You have to practice a lot to be able to defend yourself against someone who out of the blue pulls a gun on you.
Lennon still would have been shot. When your a celebrity of his stature,hundreds of people approach him weekly
you can’t pull your gun on all them.

Rarely does a stranger approach me, so I would put my hand on my gun and or pull it.
Not much he could have done especially had he been high

I remember way back listening to the radio and some guy called in asking for the station to play a song for lennons birthday or something, they obliged by playing Happiness is a warm gun.
I blew coffee out of my nose I was laughing so hard.